# How Big Is A Moray Eel?

> Moray Eel size and weight: typical about 15 kg, dimorphism, and growth.

- **Species:** Moray Eel (*Muraenidae*)
- **Conservation status:** Least Concern
- **Diet:** Carnivore (fish, crustaceans, cephalopods)
- **Habitat:** Coral reefs and rocky crevices
- **Lifespan:** 10–30 years by species
- **Top speed:** Fast strike from cover
- **Canonical HTML:** https://globalanimalguide.org/animals/moray-eel/how-big-is-a-moray-eel/
- **Parent profile:** https://globalanimalguide.org/animals/moray-eel/
- **Last reviewed:** 2026-07-16

## Quick answer

Moray eels are a family of long, snake-like marine fish (Muraenidae) found in coral reefs and rocky crevices, mostly in warm and temperate seas. They swim with an undulating, ribbon-like motion and shelter in holes by day, striking out to catch fish, crustaceans, and octopuses. Large species can reach 3 m (10 ft) and around 15 kg, and many live 10 to 30 years depending on the species.

## Who should skip this page

Skip this if you need the full biology — use the [Moray Eel profile](https://globalanimalguide.org/animals/moray-eel/) instead.

## Appearance and body plan

Morays have a slender, muscular, snake-like body with no pelvic or pectoral fins, and a long dorsal fin that runs the length of the back. Their scaleless skin is covered in a protective mucus, and many species are patterned to blend into reef crevices. Size varies widely between species, with large ones reaching up to 3 m (10 ft) and weighing around 15 kg. Their constantly open mouth, showing rows of needle-like teeth, is a breathing action rather than a threat.

## Help protect the Moray Eel

Ocean wildlife is under mounting pressure from overfishing, bycatch and plastic pollution.

[Donate to wildlife protection](https://worldanimalrescuenetwork.org/donate/)

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Source: Global Animal Guide (https://globalanimalguide.org/animals/moray-eel/how-big-is-a-moray-eel/). Licensed CC BY-NC 4.0 — free for non-commercial reuse with attribution.